NatureThe White Lions at 7 pm
This is the story of two remarkable and extremely rare white lion cubs on their journey to adulthood. Both are female, sisters born as white as snow in May 2009, in South Africa’s Kruger Park. Growing up on the savanna, they must not only overcome the same survival challenges that all young lion cubs must face, they must also overcome the threats their high visibility brings.

NOVAHunt for the Supertwister at 8 pm
“Hunt for the Supertwister” includes a segment on the 1999 tornado in Moore, OK, the site of this week’s destruction.

Secrets of the DeadAirmen And The Headhunters at 9 pm
This program investigates a fantastic WWII tale of jungle ambushes, extreme engineering, blow darts defenses, and enemy headhunting. In 1945, an American B24 bomber is shot down over Japanese — controlled Borneo. The airmen bail out and survive, only to find themselves isolated and lost in the impenetrable jungle. Briefed to fear the “savage” Dayak inhabitants, the Americans are instead taken in by these tribes and become witness to a compassionate, resourceful people who shatter stereotypes, protect them from the Japanese, and eventually deliver them safely into the hands of an eccentric British Major who orchestrates their rescue by building a bamboo runway deep in the Borneo interior.